G. C. DAVIS. 313 



apex ; abdomen subcompressed toward apex ; ovipositor slightly exserted ; fifth 

 segment of bind tarsi curved, considerably longer than the third and three times 

 as'long as the fourth. 



One specimen from ]^ew Hampshire (coll. Amer. Ent. Soc. ). 



IPOCTONIJS Foerster. 

 (Synopsis der Fam. und Gatt. der Ichneumonen, 1868.) 

 Ipoctonus (lepreSi^U!^ Prov. (Mesoleptus). Faune Ent. Can. ii. 399. 



1, . — 8 nnn. Black; face, scape beneath, moutli-parts. cheeks beneath, tegulte, 

 spot beneath, small spots on anterior margin of mesonotum, four anterior coxfe 

 and all of the trochanters, lemon-yellow ; hind tibise dusky at apex, tarsi vari- 

 able, remainder of hind legs rufous, four anterior legs paler; abdomen rufous, 

 blackish at tip and black on basal half of petiole; antennae fulvous, darker 

 toward the base ; wings subhyaline, nervures large, reddish brown, stigma slender, 

 brown, pale at base; submedian cell shorter than median on externo-median 

 nervure, second recurrent uniting close to transverse cubital ; head slightly in- 

 flated, excavated behind ; mesonotum subtrilobed ; metathorax with only the 

 transverse carina wanting; abdomen depressed, polished, gradually broadening 

 from the base: petiole slender at base, smooth ; legs slender, fourth and fifth seg- 

 ments of hind tarsi long, subequal ; claws rather small; clypeus elevated, oval 

 and broadly rounded at apex. 



One specimen from Massachusetts. 



IflESOIiEPTUS Gravenborst. 

 (Ichueumonologia Europsea, T. ii. 1829.) 

 Slender ; head transverse, usually broader than thorax ; clypeus 

 elevated, and either transversely impressed before apex with a trun- 

 cate or emarginate front edge, "or it is full, and broadly oval on the 

 front edge without distinct mai"gin. The lower tooth of mandibles 

 in the latter division is usually the longer ; antennie long, setaceous. 

 Metathorax with the longitudinal carinse usually distinct. Wings 

 large, areolet wanting; humeral cross-vein of hind wing broken 

 below the middle. Legs long, slender ; posterior tarsal segments 

 variable, so that this character is of little value. Abdomen slender, 

 usually elongate and subclavate ; petiole slender, smooth above, or 

 with groove at base ; if moderately broad at base, the enlargement 

 towai'd the apex is gradual and slight ; ovi[)Ositor short, but usually 

 distinct. 



Clypeus transversely impressed before apex: usually ridged transversely back 

 of the impression, and more or less emarginate at the front edge. 

 Posterior femora black ; tibia? yellow, black at apex. 

 Thorax black. 



Trochanters and coxje black ; clypeus black at base. 



Segments 1-3 of abdomen ferruginous; middle femora yellow. 



tardiiN Prov. 



TRANS. .VM. ENT. SOC. XXIV. (40) NOVEMBKR, 1897. 



